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Hubble’s Final Mission | National Geographic


helping to design every step the
astronauts take is Christy Hansen the
space walking task lead for the Hubble
servicing mission well this mission is
very exciting because what we’re doing
on this flight is five back-to-back
spacewalks typically on orbit who’s well
maybe do for and are not back there back
it’s a very heavily pack mission so
essentially on any hubble space
telescope servicing mission we’re either
gonna fix broken science instruments on
the telescope we’re gonna upgrade
leading the highly skilled team of space
walkers as veteran Hubble astronaut John
Grunsfeld this is John’s third mission
to the Hubble joining John for three of
the spacewalks is rookie astronaut drew
Feustel another Hubble veteran Mike
Massimino will be making his second
visit to the telescope he’ll be joined
on two of the space walks by another
first-time astronaut mike good
on the first spacewalk John and drew
will change out the white field camera
this new camera is the highest science
priority on the mission and it’s a big
improvement over the old one with the
addition of infrared arrays the camera
will be able to look much farther into
the distant universe and continue to
provide the stunning images that
Hubble’s known for it will take a little
over two hours to swap cameras one of
the biggest challenges for the
astronauts on this space walk is hand
fatigue from constantly fighting the
pressures of their suits while gripping
the cameras for such a long period of
time near the end of the first spacewalk
they’ll change out the batteries this is
the first time batteries have ever been
replaced on the telescope giving Hubble
fresh new power cells there are two
modules that contain three batteries
each John will work on replacing one set
while drew changes out the other for the
second spacewalk the teams are switched
Mike good is on the robotic arm and Mike
Massimino will be the free floater
they’re changing out the six gyroscopes
that help keep the telescope properly
oriented in space it’s a challenging
task because the doors they need to get
into are unevenly shaped and once inside
it’s a tight fit you have a giant guy in
a spacesuit jammed in this they called
the ex Ralph and he’s not allowed to
touch anything inside of the air
none of the black multi-layer insulation
there’s cabling and Hardy sir who’s that
giant guys that might NASA no Mike
Matheny’s what is a giant guy now the
most exciting parts of the missions will
be spacewalks number three and four give
me sweating bullets all I’m gonna sweat
i’ll be on the edge of my seat looking
ahead girl you okay what we’re going to
do is we’re perform a task has never
been done on orbit reporter only two
spacewalks normally everything is
designed to be performed by an astronaut
wearing big beefy gloves so the bolt
sizes are nice and bangs got a big nice
socket on it and everything’s captive so
when you’re released up it doesn’t float
away well we’re getting into an
instrument the space telescope imaging
spectrograph we’re getting into a card
on the inside kind of make your computer
at home to pull the cover off there’s a
little card in there we have to pull
that card out from you wanted the space
telescope imaging spectrograph stopped
working on the Hubble in August 2004
when a power supply failed but before
that happened it was able to confirm for
the first time the existence of a black
hole in the center of a galaxy the
spectrograph can measure how fast a star
or planet is moving and what it’s made
of to get to this critical piece of
hardware the astronauts will need to
remove a cover that is held in place
with lots of tiny screws 111 your
dilemma non-fact non captive screws and
the S critters are gonna be floating
around you got you actually have to
design a tool to make it happen and I
can show you what that total junk down
here on the moment let’s see it this is
called the space telescope imaging
spectrograph faster captured play and
it’s a beefy to a pretty impressive this
whole thing we snap on to the front of
the science instrument right so it’s on
top of the cover we have to remove and
if you look closely it’s a lexan cover
and there are 111 holes in this and what
that allows us to do is to access the
screws on the cover of the science
instrument now these screws are they
Phillips head screws are these standard
screws or what is it crazy screws are 32
and most of them are torque set screws
corset those really funky bit really
funky bit we have torque set and
everything is color-coded on the faster
capture plate to help the astronaut and
a ground team to communicate and not be
confused so astronaut puts the red
socket on to his mini power tool sticks
the the socket or fit through Ito
releases the screw and then the screws
are all floating around inside the
fastest absolutely covered so they won’t
be free inside the telescope with a new
bed
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